code: def test_jieba_tokenizer(self):
      os.system("pip3 uninstall -y jieba")
  
      with self.assertRaises(ModuleNotFoundError):
          _ = JiebaTokenizer()
  
      os.system("pip3 install  jieba")
      t = JiebaTokenizer()
      assert [
          "你好",
          "世界",
          "!",
          " ",
          "Hello",
          " ",
          "World",
      ] == t.tokenize("你好世界! Hello World")
  
file_path: Kashgari/tests/test_tokenizers.py
imports: import unittest
  import numpy
  import os
  from kashgari.tokenizers import Tokenizer, JiebaTokenizer, BertTokenizer
  from tests.test_macros import TestMacros
label_desc: Use image node_id 1 for calling the TestUtils obj's underlying member method code with example usage: obj.test_jieba_tokenizer() without return types